Rare Earth Elements on Glass-Forming Ability and Thermal Stability of Cu-Zr-Al Metallic Glass

Abstract:

The rare earth elements (RE= Y, Sm, La, Ce) were used as alloying materials in Cu₅₀Zr₄₅Al₅ BMG, and their influences on the glass-forming ability and thermal stability were studied in this paper. All the samples remained in full metallic glass state with minor additions of Y, Sm and La. Increasing the amount of RE additions, the Cu₁₀Zr₇ and Zr₂Cu phases precipitated and glass transition temperature T_g and crystallization temperature T_x significantly decreased. The reduced glass transition temperature T_rg =T_g/T_l ranged from 0.592 to 0.611 and the γ parameter ranged from 0.393 to 0.409.

• Periodical: Materials Science Forum (Volume 688)
• Pages: 426-430
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.688.426
• Online since: June 2011
• Authors: Yan Fang Wang, Li Li, Chuan Sun, Qing Long Lu, Zhi Qiang Shi
• Keywords: Cu-Based Metallic Glasses, Glass-Forming Ability, Rare Earth Element (REE), Thermal Stability

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